Robert P. Williams, the microbiologist, described the process that causes bread and communion wafers to appear as though blood is on them as stemming from red pigment found in . The characteristic color has caused many to claim it is the blood of Christ, a divine miracle, while others look even deeper, claiming that the intricate complexity of the pigment at least bears evidence of creative design.

The genus Serratia may be discovered in food, water and vegetation and its pathogenicity has been diagnosed for the reason that 1960s.

Robert P. Williams, the microbiologist, described the process that causes bread and communion wafers to appear as though blood is on them as stemming from red pigment found in Serratia marcescens. The characteristic color has caused many to claim it is the blood of Christ, a divine miracle, while others look even deeper, claiming that the intricate complexity of the pigment at least bears evidence of creative design.

Serratia marcescens is the maximum often remoted species, with Serratia liquefactions being the rarest, discovered in instances of contamination associated with the touch lens and transfusion of infected blood.

Intravascular stress tracking structures are broadly used within side the hemodynamic evaluation of seriously sick patients.

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The correct answer is Serratia marcescens

The genus Serratia can be found in food, water and plants and its pathogenicity has been recognized since the 1960s. Serratia marcescens is the most frequently isolated species, with Serratia liquefaciens being the rarest, found in cases of infection related to the contact lens and transfusion of contaminated blood. The present summary reports an outbreak of infection by this agent, possibly related to the contamination of the sphygmomanometer used to calibrate the hemodynamic monitoring system.

Intravascular pressure monitoring systems are widely used in the hemodynamic assessment of critically ill patients. These systems consist of a fluid catheter, connected to the patient's intravascular space and an electronic transducer, which transforms the fluid pressure into electrical impulses, captured by a monitor. These systems are infused to prevent clots and must be calibrated periodically.

clearcutting reproduces a new even-aged stand by completely removing the mature stand.

clearcutting as a silvicultural treatment has several characteristics:

it causes a sudden environmental change

it removes the seed source from the regeneration area

the configuration of the clearcut may affect seed dispersal

it begins a new rotation

it will eliminate some pests that require forest cover

overall, it temporarily removes the forest cover, transforming the forest community and environment.

clearcutting followed by artificial (seeded or planted) regeneration has several advantages:

we can avoid delay in restocking the site

we can introduce a selected species, seed source, and genotype

we can control arrangement and spacing

we can achieve uniformity in the new stand

we can overcome the problems associated with securing sufficient natural regeneration.

the shelterwood method involves the removal of most of the mature stand at the end of the rotation, but a portion of the mature stand is left standing.   the shelterwood method serves three basic purposes:

to prepare the stand for production of abundant seed

to modify the environment in a way that promotes germination and survival of the selected species

to build up the amount and size of advance regeneration to ensure the prompt restocking of the new stand following overstory removal.

the shelterwood method involves a sequence of 3 cuttings:

preparatory cuttings: make the seed trees more vigorous and set the stage for regeneration. see our thinning page for more information.

establishment/seed cuttings: open up enough vacant growing space to allow establishment of the new regeneration.

removal cuttings: uncover the new crop to allow it to fill the growing space.

the residual trees in the shelterwood must:

be sturdy and windfirm

be able to survive exposure

flower and reproduce seed

be the best trees of the mature stand

keep in mind that the shelter trees must not occupy the entire site.   a void must be created in order to make room for the new regeneration. the amount of shelter to leave will depend on the following factors:

species characteristics (seeding and shelter requirements)

the number of cuttings in the cutting sequence (1, 2, or 3)

landowner objectives

the size of the area to be regenerated

the final removal harvest level required to be profitable

the shelter must be removed before it impedes the growth of the new stand or threatens its survival.